Upper Colorado and San Juan River Basins Endangered Fish Recovery Programs Reauthorization Act of 2023

This bill reauthorizes existing conservation programs for endangered and threatened fish species in the Upper Colorado and San Juan River basins. It extends funding through fiscal year 2031 (previously ending in 2024) at $50 million annually (adjusted for inflation), replacing the prior $88 million authorization. The bill updates program definitions to explicitly include "threatened" species, modifies how non-Federal contributions (like state or tribal funds) can be used for capital projects, and clarifies funding rules for annual operations. These changes directly affect conservation efforts for native fish, river basin stakeholders, and federal agencies managing water resources in Colorado, Utah, New Mexico, and Wyoming.